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To study the effect of Farmyard manure with or without phosphorus fertilization and irrigation deficit under salt affected soils on yield and yield components of wheat (Triticum aestivum L) and some soil properties as well as productivity of irrigation water (PIW) and economic return an experiment was conducted at North Nile Delta area for two winter seasons (2016/17 and 2017/18). A split-plot complete randomized plot design with three replicates was used. Two irrigation levels, Ifull (50 % moisture depletion) and Id (70 % moisture depletion) occupied the main plots. Farmyard manure (FYM) and two P sources (super phosphate, Ps, and ammonium phosphate, Pa) were applied to the sub-main plots. The results can be summarized as follows:FYM improved wheat productivity. So, FYM increased the grain yield and straw yield by 40.85 and 14.54, %, respectively over the control.The grain yield was increased by 13.25 and 15.90 %, while the increases in the straw yield were 5.19 and 1.71 % in plots received Ps or Pa, respectively. P fertilization combined with FYM was more effective on wheat productivity. Therefore, the application of Ps+ FYM increased the grain and straw yields, by 56.50 and 17.92%, respectively, also the corresponding increases with Pa+FYM were 56.37 and 14.17%, respectively over the control. Irrigation deficit (Id) adversely affected the wheat productivity. Id decreased the grain yield and straw yield, by 11.75 and 5.30 %, respectively compared to Ifull.FYM application with or without P fertilizers were more pronounced relative to P fertilizers individual or untreated soils in reducing the salinity and sodicity of the soil. Data showed 15.62 and 14.26% decreases in ECe for Ps+FYM and Pa+FYM, respectively than untreated soils. The corresponding values of SAR were 8.45 and 8.06%, respectively.Irrigation at 50% soil moisture depletion resulted in decreased ECe (9.70%) and SARe (7.39 %) than irrigation at 70% depletion. The application of FYM with or without P fertilizers resulted in enhancing the HC, AW, SP and buke density comparing to P fertilizers alone or untreated soils especially with the irrigated at 50% soil moisture depletion. FYM application with or without P fertilizers in heavy clay salt affected soils were more pronounced in enhancing PIW and increasing net return and economic efficiency relative to P fertilizers alone or untreated soils especially when irrigated at 50%soil moisture depletion.The maximum net return and economic efficiency for wheat yields were achieved from Ps +FAY under full water requirements.

journal of soil sciences and agricultural engineering /journal of soil sciences and agricultural engineering

The Integrated Levels Impacts of Farmyard Manure with Phosphorus Fertilizers and Irrigation on Soil Properties and Wheat Productivity under Saline Soils in North Delta, Egypt